Oil-still and attachment



(No Model.) 2 Sheetg-Sheet ,2

J. B. DUBLBR.

OIL STILL AND ATTACHMENT.

Patented Jan. 3, 18:82.

N F51 EH5. PhMwLitMgraphar. Washinglolx D. C.

UNITED STATES v PATENT O FICE. i

JOHN BCDUBLER, or PHILADELPHIA, PENNSYLVANIA.

O-IL-STILL A'IND ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 251,770, dated January 3, 1882.

I Application filed May'll, 1881. (N model.)

To all whom it may concern resents a verticalcross section through the still with a portion of the top. Fig. 2 is a plan, showing the top of the still, the radial fire-walls,

and the fire or heat check. Fig. 3 is anlenlarged view of the hanging supports fbrlthe outer periphery of the still. 1

Similar letters of reference indicate corresponding parts in the several figures.

The object of my invention is to construct for the purpose of refining crude oil or petroleum an improved still in which the process ofevaporating and distilling of the oil may be carried on with a considerable saving of fuel and with greater rapidity and perfect safety.

' My invention consists of a still, of any suitable shape or size, provided with an adjustable fire-check, so that the heat from the fires will always be upon the bottom of the still, and at the same time be on a line with the top of the oil in the still.

In the drawings, A Arepresent a still of any size, and in this case of a circular form, riveted to an iron tube, B B B B, forming the inner walls of the still, and which extend to the top of the still and reach down and rest upon the foundation upon which the brickwork of the still rests. This tube, for a fortyfoot still, is about seven feet in diameter, havingport-holes just below the bottom of the still and at each annular fire-place for the passage of the heat into a chamber, 0 0, formed by an adjustable double two-part iron tube, D' D, fitting at its top and bottom into the iron tube B. B, and also having its outer periphery cased with fire-brick, and the heat-check E E E. at the top, so that the heat from the fires willnot pass out beyond it, andwhen depressed from time to time the heat is drawn to the level of the oil in the still as it decreases in volume by evaporation.

sufticient size to pass off the full combustion of the grate-fires; and these port-holes are pierced through the iron tube B and communicate with the annular chamber 0, the heat ascending to the check E, and,there arrested, passes through the ports H into the chamber J and out the downdraft-chitmber K into the chimney.

The outer periphery of the still is supported by the swinging or hanging bars L L, (dotted lines, Figs. 1 and 3,) pivoted to the still near to the standards M M, Figs. 1 and 3, which are secured to the annular outer wall,-N N. These swinging bars L of the still permit of the still expanding and contractin g. a

G G represent the furnace or grate bars,

upon which the coal or wood is placed through the doors]? 1?, and the ash-pit doors are for removing the residuum of the combustion of the fuel and also furnishing oxygen to thefires.

These fire-places G G are divided into radial sections by brick walls a, Fig. 2, in the present the bottom, and extending upward and pivoted case into sixteen sections or divisions, which extend upward to within three or four inches of the metal bottom of the still, and thus distribute heat uniformly and constantly during t the stilling operation over the bottom of the still. a

The double adjustable iron tube 1) D has an inner chamber,D, for water, which is suppliedfrom the condenser by water-tubes R R, Figs.

-1 and12, and has an overflow just under the fire-brick or heat-check, as at F and so arranged that the water will pass or trickle down the inner side of the adjustable double iron tube D D and be carried off by a siphon or trap in the bottom of the smoke-flue K. (Not shown.) The overflow takes place at F directly under the heat-check E, as seen in Fig. 1, to cause the water to'trickledown the sides of the chamber J.

On the top of the still are one or more domes, S S, into which the evaporated oil is gathered and passes through the pipes T intothe cont denser W. These pipes and condenser are surrounded with flowing water for facilitating the condensation of the vaporized oil. The pipe V passes it into the goose-neck in the usual manner. 7

That the surface of the oil in the still may be seen, I employ a glass tube, a, of the length r (No, Model.)

2 SheetsSheet 1. J. DU BOIS.

LOOK AND DAM. No. 251,771.

Patented Jan. 3,1882.

By (U/Altar 5. Pholo-Lilhagnpher. wnmmmpm 

